advertisements, out of one hundred
and thirty slaves, only _three_ are over forty years old! In the
other, out of fifty-one slaves, only _two_ are over _thirty-five_; the
oldest is but thirty-nine, and the way in which he is designated in
the advertisement, is an additional proof, that what to others is
"middle age," is to the slaves in the south-west "old age:" he is
advertised as "_old_ Jeffrey."

But the proof that the slave population of the south-west is so
over-worked that it cannot _supply its own waste_, does not rest upon
mere inferential evidence. The Agricultural Society of Baton Rouge,
La., in its report, published in 1829, furnishes a labored estimate of
the amount of expenditure necessarily incurred in conducting "a
well-regulated sugar estate." In this estimate, the annual net loss
of slaves, over and above the supply by propagation, is set down at
TWO AND A HALF PER CENT! The late Hon. Josiah S. Johnson, a member of
Congress from Louisiana, addressed a letter to the Secretary of the
United States' Treasury, in 1830, containing a similar estimate,
apparently made with great care, and going into minute details. Many
items in this estimate differ from the preceding; but the estimate of
the annual _decrease_ of the slaves on a plantation was the same--TWO
AND A HALF PER CENT!

The following testimony of Rev. Dr. Channing, of Boston, who resided
some time in Virginia, shows that the over-working of slaves, to such
an extent as to abridge life, and cause a decrease of population, is
not confined to the far south and south-west.

"I heard of an estate managed by an individual who was considered as
singularly successful, and who was able to govern the slaves without
the use of the whip. I was anxious to see him, and trusted that some
discovery had been made favorable to humanity. I asked him how he was
able to dispense with corporal punishment. He replied to me, with a
very determined look, 'The slaves know that the work _must_ be done,
and that it is better to do it without punishment than with it.' In
other words, the certainty and dread of chastisement were so impressed
on them, that they never incurred it.

"I then found that the slaves on this well-managed estate, _decreased_
in number. I asked the cause. He replied, with perfect frankness and
ease, 'The gang is not large enough for the estate.' In other words,
they were not equal to the work of the plantation, and, yet were _made
to do it_, thoug